Editing locked after creating variable name with the same name.

[Charles-Tang]

当尝试更改变量名称时发生错误

当我尝试更改变量名称时,我不小心将名称与另一个变量设成一样,软件提示已经有这个变量了,当我重新尝试修改的时候,无法在输入框中输入任何内容,创建变量的窗口也无法输入任何内容

When I try to change the variable name, I accidentally set the name to be the same as another variable, the software prompts that the variable already exists, and when I try to modify it again, I cannot enter anything in the input box, creating a window for the variable also can't enter anything

[zhengyangliu]

确实有这个问题，这是由于electron在win10后系统的一个bug导致，出现这个问题后，你可以将光标移动到软件外部点击聚焦其他内容，然后在回到软件中重新输入即可，不过同时我们会修复这个问题的。

[zhengyangliu]

These problems all stem from the same bug: electron/electron#20400 (comment). Under the windows system, the render thread inside the electron cannot use the altert popup window. We've fixed some of this before: dcf119b, but didn't notice that alerts are also used in blocks, Now we need to put the alert from blocks to vm->gui->electron to fix this bug.